MySQL：为函数st_geometryfromtext提供的GIS数据无效

这是我的代码：

SET @poly =
    'polygon((-98.07697478272888 30.123832577126326,
              -98.07697478272888 30.535734310413392,
              -97.48302581787107 30.535734310413392,
              -97.48302581787107 30.123832577126326))';

SELECT name
FROM county_shapes
WHERE MBRContains(ST_GeomFromText(@poly), SHAPE);

每当我运行时,我得到一个“MysqL：提供给函数st_geometryfromtext的无效GIS数据”错误.

这会返回相同的错误：

SELECT name
FROM county_shapes
WHERE MBRContains(ST_GeomFromText('polygon((-98.07697478272888 30.123832577126326,
              -98.07697478272888 30.535734310413392,
              -97.48302581787107 30.535734310413392,
              -97.48302581787107 30.123832577126326))'), SHAPE);

有任何想法吗？

解决方法:

您需要将第一个和最后一个点指定为相同.

尝试这个.

SET @poly =
    'polygon((-98.07697478272888 30.123832577126326,
              -98.07697478272888 30.535734310413392,
              -97.48302581787107 30.535734310413392,
              -97.48302581787107 30.123832577126326,
              -98.07697478272888 30.123832577126326,))';

SELECT name
FROM county_shapes
WHERE MBRContains(ST_GeomFromText(@poly), SHAPE);

和

SELECT name
FROM county_shapes
WHERE MBRContains(ST_GeomFromText('polygon((
              -98.07697478272888 30.123832577126326,
              -98.07697478272888 30.535734310413392,
              -97.48302581787107 30.535734310413392,
              -97.48302581787107 30.123832577126326,
              -98.07697478272888 30.123832577126326))'), SHAPE);